You go to a team dinner with your aunt and uncle. the cost of a student meal is $5.50. meals for adults cost $12.50 each. how much does it cost for the three of you to go to the dinner?

(12.50 x 2) + 5.50

25 + 5.50

25 + 5.50= 30.5

Answer is 30.5

Step-by-step explanation:

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

step-by-step explanation:

c(x)= 6x + 3

step-by-step explanation: